16040504 has 16 divisors (see below), whose sum is σ = 30262920. Its totient is φ = 7970400.

The previous prime is 16040491. The next prime is 16040513. The reversal of 16040504 is 40504061.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4847 + ... + 7454.

Almost surely, 2^16040504 is an apocalyptic number.

It is an amenable number.

16040504 is a deficient number, since it is larger than the sum of its proper divisors (14222416).

16040504 is a wasteful number, since it uses less digits than its factorization.

16040504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12470 (or 12466 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 16040504 is about 4005.0597998032. The cubic root of 16040504 is about 252.1966634802.

Adding to 16040504 its reverse (40504061), we get a palindrome (56544565).

The spelling of 16040504 in words is "sixteen million, forty thousand, five hundred four".